Ositech comm Trumpcard Data/Fax Modem 사용자 설명서

User’s Guide and Reference

5- 7

Modem Test Procedures

This test is used to verify the communications link and the remote
Modem, and is only functional when the Modem is in direct mode (&Q0)
and the COM port baud rate is set to 14400 bps (Trumpcard 14400) /
28800 bps (Trumpcard 28800) or less.

To run this test:

1. Establish a connection with a remote Modem.

2. Enter 

AT&T3 [ENTER]

 to put the Modem into the local digital

loopback mode.

3. Instruct the remote Modem operator to enter a message.

During this test the local Modem simply loops back any incoming

data to the remote Modem. If the information sent and received by the
remote Modem are identical, the test is successful.

4. Enter 

AT&T0 [ENTER]

 to end the test.